Baseline & Change Manager

Amentum; City of Westminster; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A leading engineering firm is seeking a Baseline & Change Manager for the Sizewell C project, one of the UK's largest megaprojects. This role focuses on ensuring the effective management of project baselines and change controls, working closely with Project Controls Managers and engineering teams. The ideal candidate will have a degree-level education and professional experience in project management or controls. This position offers the chance to contribute to a significant low-carbon energy initiative, with opportunities for hybrid work.

Qualifications

• Professional experience in programme, project, controls, or commercial management.
• Understanding of WBS/CBS structures and change control principles.
• Ability to operate within a complex corporate environment.

Responsibilities

• Support the Baseline & Change Lead in ensuring effective use of the change management process.
• Coordinate and facilitate change management activities across the Delivery Programme.
• Advise Project Managers and Change Owners on change control procedures.

Skills

Change management

Facilitation skills

Project control principles

Governance awareness

Education

Degree-level education or equivalent

Tools

Project management software

Power BI

Job description

Overview

Join the Sizewell C (SZC) project—one of the UK's largest megaprojects—and play a pivotal role in supporting the UK's Net Zero ambitions. Following the success of Hinkley Point C, SZC has secured planning approval and government financing support and is now in construction seeking private investment. Once completed, SZC will provide low carbon electricity to six million homes for 60 years. As a Baseline & Change Manager, you will be at the heart of SZC's Project Controls function, ensuring disciplined management of baselines and robust, consistent application of change control across the Delivery Programme. Working within the Programme Management Office (PMO), you will help ensure the project is delivered safely, on time, on budget, and to the required quality. About the opportunity: The Baseline & Change Management discipline ensures the project's scope, budget, forecasts, and schedule remain aligned with approved changes governed through the Investment Change Committee (ICC) model. As Baseline & Change Manager, you will support and advise on processes and procedures that underpin change control, working closely with Project Controls Managers, Change Engineers, and Delivery Teams. You will help facilitate the change process, support preparation for ICC meetings, and maintain high-quality reporting and governance throughout the programme lifecycle. We have two 'Baseline & Change Manager' positions available (multiple locations) - Suffolk based & London Based (with hybrid working available).

Responsibilities

• Support the Baseline & Change Lead in ensuring effective use of the change management process.
• Coordinate and facilitate change management activities across the Delivery Programme.
• Serve as a central point of contact for all change management queries.
• Assist in developing and maintaining effective baseline management strategies, plans, and procedures.
• Coordinate key inputs (Schedule, Cost, Risk, PMO) to enable end to end changes to baselines, contracts, and programme governance.
• Ensure governance processes are followed in line with the project reporting cycle.
• Support the production of monthly Baseline & Change reports.
• Manage weekly and monthly routines, ensuring data accuracy and consistency.
• Promote consistent application of project controls across SZC.
• Advise Project Managers, Change Owners, and Supply Chain partners on change control procedures and standards.
• Collaborate with Project Controls Managers and Change Managers to ensure changes are fully identified, assessed, and implemented.
• Facilitate change requests for engineering and delivery teams.
• Review and monitor the quality of change proposals for completeness and alignment with the baseline.
• Provide guidance and training to stakeholders on change management processes and tools.
• Develop and deliver training materials to improve understanding and compliance across the programme.

Qualifications

• Degree-level education or equivalent professional experience.
• Professional experience in programme, project, controls, or commercial management.
• Understanding of WBS/CBS structures and change control principles.
• Knowledge of governance, strategic planning, risk analysis, and major project delivery.
• Strong facilitation skills and ability to work independently or collaboratively.
• Ability to operate within a complex corporate environment.

Desirable

• Relevant professional certifications or memberships (e.g., APM, PMI, ICE, RICS, etc.).
• Experience shaping strategic changes on large programmes.
• Experience managing contractors/consultants in major construction or regulated environments.
• Membership or fellowship of a relevant professional institution.
• Working knowledge of project controls processes and tools.
• Familiarity with project/programme management software.
• Understanding of contract management (including EWNs and workflow processes).
• Experience maintaining project documentation and reports.
• Ability to chair project meetings and workshops.
• Knowledge of Power BI or similar reporting tools.

At the end of the responsibilities and qualifications, the description remains focused on the Baseline & Change Manager role and how it fits within SZC's Programme Controls and ICC framework.